jack-knife有中间呈V形弯;等意思，那么你知道jack-knife的过去式是什么吗?今天一起来学习一下jack-knife的过去式以及jack-knife的用法和例句，希望对大家的学习有所帮助!
jack-knife的过去式及其它时态
jack-knife的过去式:jack-knifed
jack-knife现在分词:jack-knifing
jack-knife第三人称单数:jack-knifes
jack-knife的用法和例句
1、Jack knife has hebetated, can you help me to grind it?
杰克,菜刀变钝了, 能帮我磨一下 吗 ?
